+++ /dev/null
-/*
- * net/dsa/mv88e6060.c - Driver for Marvell 88e6060 switch chips
- * Copyright (c) 2008-2009 Marvell Semiconductor
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <linux/list.h>
-#include <linux/netdevice.h>
-#include <linux/phy.h>
-#include <net/dsa.h>
-
-#define REG_PORT(p) (8 + (p))
-#define REG_GLOBAL 0x0f
-
-static int reg_read(struct dsa_switch *ds, int addr, int reg)
-{
- return mdiobus_read(ds->master_mii_bus, ds->pd->sw_addr + addr, reg);
-}
-
-#define REG_READ(addr, reg) \
- ({ \
- int __ret; \
- \
- __ret = reg_read(ds, addr, reg); \
- if (__ret < 0) \
- return __ret; \
- __ret; \
- })
-
-
-static int reg_write(struct dsa_switch *ds, int addr, int reg, u16 val)
-{
- return mdiobus_write(ds->master_mii_bus, ds->pd->sw_addr + addr,
- reg, val);
-}
-
-#define REG_WRITE(addr, reg, val) \
- ({ \
- int __ret; \
- \
- __ret = reg_write(ds, addr, reg, val); \
- if (__ret < 0) \
- return __ret; \
- })
-
-static char *mv88e6060_probe(struct mii_bus *bus, int sw_addr)
-{
- int ret;
-
- ret = mdiobus_read(bus, sw_addr + REG_PORT(0), 0x03);
- if (ret >= 0) {
- ret &= 0xfff0;
- if (ret == 0x0600)
- return "Marvell 88E6060";
- }
-
- return NULL;
-}
-
-static int mv88e6060_switch_reset(struct dsa_switch *ds)
-{
- int i;
- int ret;
-
- /*
- * Set all ports to the disabled state.
- */
- for (i = 0; i < 6; i++) {
- ret = REG_READ(REG_PORT(i), 0x04);
- REG_WRITE(REG_PORT(i), 0x04, ret & 0xfffc);
- }
-
- /*
- * Wait for transmit queues to drain.
- */
- msleep(2);
-
- /*
- * Reset the switch.
- */
- REG_WRITE(REG_GLOBAL, 0x0a, 0xa130);
-
- /*
- * Wait up to one second for reset to complete.
- */
- for (i = 0; i < 1000; i++) {
- ret = REG_READ(REG_GLOBAL, 0x00);
- if ((ret & 0x8000) == 0x0000)
- break;
-
- msleep(1);
- }
- if (i == 1000)
- return -ETIMEDOUT;
-
- return 0;
-}
-
-static int mv88e6060_setup_global(struct dsa_switch *ds)
-{
- /*
- * Disable discarding of frames with excessive collisions,
- * set the maximum frame size to 1536 bytes, and mask all
- * interrupt sources.
- */
- REG_WRITE(REG_GLOBAL, 0x04, 0x0800);
-
- /*
- * Enable automatic address learning, set the address
- * database size to 1024 entries, and set the default aging
- * time to 5 minutes.
- */
- REG_WRITE(REG_GLOBAL, 0x0a, 0x2130);
-
- return 0;
-}
-
-static int mv88e6060_setup_port(struct dsa_switch *ds, int p)
-{
- int addr = REG_PORT(p);
-
- /*
- * Do not force flow control, disable Ingress and Egress
- * Header tagging, disable VLAN tunneling, and set the port
- * state to Forwarding. Additionally, if this is the CPU
- * port, enable Ingress and Egress Trailer tagging mode.
- */
- REG_WRITE(addr, 0x04, dsa_is_cpu_port(ds, p) ? 0x4103 : 0x0003);
-
- /*
- * Port based VLAN map: give each port its own address
- * database, allow the CPU port to talk to each of the 'real'
- * ports, and allow each of the 'real' ports to only talk to
- * the CPU port.
- */
- REG_WRITE(addr, 0x06,
- ((p & 0xf) << 12) |
- (dsa_is_cpu_port(ds, p) ?
- ds->phys_port_mask :
- (1 << ds->dst->cpu_port)));
-
- /*
- * Port Association Vector: when learning source addresses
- * of packets, add the address to the address database using
- * a port bitmap that has only the bit for this port set and
- * the other bits clear.
- */
- REG_WRITE(addr, 0x0b, 1 << p);
-
- return 0;
-}
-
-static int mv88e6060_setup(struct dsa_switch *ds)
-{
- int i;
- int ret;
-
- ret = mv88e6060_switch_reset(ds);
- if (ret < 0)
- return ret;
-
- /* @@@ initialise atu */
-
- ret = mv88e6060_setup_global(ds);
- if (ret < 0)
- return ret;
-
- for (i = 0; i < 6; i++) {
- ret = mv88e6060_setup_port(ds, i);
- if (ret < 0)
- return ret;
- }
-
- return 0;
-}
-
-static int mv88e6060_set_addr(struct dsa_switch *ds, u8 *addr)
-{
- REG_WRITE(REG_GLOBAL, 0x01, (addr[0] << 8) | addr[1]);
- REG_WRITE(REG_GLOBAL, 0x02, (addr[2] << 8) | addr[3]);
- REG_WRITE(REG_GLOBAL, 0x03, (addr[4] << 8) | addr[5]);
-
- return 0;
-}
-
-static int mv88e6060_port_to_phy_addr(int port)
-{
- if (port >= 0 && port <= 5)
- return port;
- return -1;
-}
-
-static int mv88e6060_phy_read(struct dsa_switch *ds, int port, int regnum)
-{
- int addr;
-
- addr = mv88e6060_port_to_phy_addr(port);
- if (addr == -1)
- return 0xffff;
-
- return reg_read(ds, addr, regnum);
-}
-
-static int
-mv88e6060_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val)
-{
- int addr;
-
- addr = mv88e6060_port_to_phy_addr(port);
- if (addr == -1)
- return 0xffff;
-
- return reg_write(ds, addr, regnum, val);
-}
-
-static void mv88e6060_poll_link(struct dsa_switch *ds)
-{
- int i;
-
- for (i = 0; i < DSA_MAX_PORTS; i++) {
- struct net_device *dev;
- int uninitialized_var(port_status);
- int link;
- int speed;
- int duplex;
- int fc;
-
- dev = ds->ports[i];
- if (dev == NULL)
- continue;
-
- link = 0;
- if (dev->flags & IFF_UP) {
- port_status = reg_read(ds, REG_PORT(i), 0x00);
- if (port_status < 0)
- continue;
-
- link = !!(port_status & 0x1000);
- }
-
- if (!link) {
- if (netif_carrier_ok(dev)) {
- printk(KERN_INFO "%s: link down\n", dev->name);
- netif_carrier_off(dev);
- }
- continue;
- }
-
- speed = (port_status & 0x0100) ? 100 : 10;
- duplex = (port_status & 0x0200) ? 1 : 0;
- fc = ((port_status & 0xc000) == 0xc000) ? 1 : 0;
-
- if (!netif_carrier_ok(dev)) {
- printk(KERN_INFO "%s: link up, %d Mb/s, %s duplex, "
- "flow control %sabled\n", dev->name,
- speed, duplex ? "full" : "half",
- fc ? "en" : "dis");
- netif_carrier_on(dev);
- }
- }
-}
-
-static struct dsa_switch_driver mv88e6060_switch_driver = {
- .tag_protocol = htons(ETH_P_TRAILER),
- .probe = mv88e6060_probe,
- .setup = mv88e6060_setup,
- .set_addr = mv88e6060_set_addr,
- .phy_read = mv88e6060_phy_read,
- .phy_write = mv88e6060_phy_write,
- .poll_link = mv88e6060_poll_link,
-};
-
-static int __init mv88e6060_init(void)
-{
- register_switch_driver(&mv88e6060_switch_driver);
- return 0;
-}
-module_init(mv88e6060_init);
-
-static void __exit mv88e6060_cleanup(void)
-{
- unregister_switch_driver(&mv88e6060_switch_driver);
-}
-module_exit(mv88e6060_cleanup);
-
-MODULE_AUTHOR("Lennert Buytenhek <buytenh@wantstofly.org>");
-MODULE_DESCRIPTION("Driver for Marvell 88E6060 ethernet switch chip");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:mv88e6060");
projects / karo-tx-linux.git / blobdiff